CN219825412U - Hoisting system for deep water dredging - Google Patents

Abstract

The utility model relates to a hoisting system for deep water dredging, which is provided with a mud suction system, a hoisting platform and a transferring platform, wherein the hoisting platform and the transferring platform are respectively provided with a floating platform, a crane is arranged on the hoisting platform, a booster pump is arranged on the transferring platform, a mud suction head of the mud suction system is connected to a heavy object connecting end of a lifting rope used for hanging heavy objects on the crane, the mud suction system is a pneumatic mud suction system, the mud suction head of the mud suction system is a pneumatic mud suction head, an air supply pipe used for providing pressure air for the mud suction head is connected, an inlet side of the air supply pipe is connected with a pressure air source, a mud outlet of the mud suction head is connected with a mud conveying pipe, a plurality of floating bodies are fixedly connected to a water surface extending section of the mud conveying pipe, and float on the water surface by virtue of the buoyancy of the floating bodies. The utility model can meet the requirements of deep water mud sucking/dredging operation in a near-dam area of a reservoir or similar occasions.

Description

Hoisting system for deep water dredging

Technical Field

The utility model relates to a hoisting system for deep water dredging.

Background

At present, large equipment such as a large dredger, a grabbing dredger or a cutter suction dredger is adopted for dredging, and the dredger has great advantages under the condition of enough operation sites and proper navigation conditions. However, in the case where the dredger cannot be used for operation due to limited operation sites or it is difficult to bring the dredger to the site due to lack of navigation or land transportation conditions, dredging using the dredger is difficult, in which case the existing solution is mainly emptying dredging, dredging water with an excavator after emptying. However, in some cases, for example, in deeper reservoirs (for example, 45 meters in depth), especially in near-dam areas, the prior art has certain implementation barriers due to the characteristics of high environmental protection requirements, large height difference under the dam top, complex sediment composition and the like. For example, since the reservoir cannot be emptied, the condition of excavating on land by an excavator is not provided; because the reservoir area has no navigation condition, the large dredger cannot enter the ground; because of the large water depth, the grabbing and lifting type cutter suction dredger cannot dredge; because of the generally narrow approach roads, the dam top height difference behind the dam is large (for example, the dam top height difference is 61m from the ground), the difficulty of entering the front water surface of the dam from the ground is increased, and great difficulty exists in the approach of various large-scale equipment.

On the other hand, the existing floating platform (floating platform) adopts a structure that a platform (platform main body) and floating bodies are independently arranged, one or a plurality of independent floating bodies which are made into a certain shape are respectively and fixedly arranged at two sides or below the platform, and the platform floats on the water surface by means of the buoyancy of the floating bodies. For example, chinese patent document CN218662286U discloses a floating platform device for water quality testing, including water quality testing floating platform main part and water quality testing section of thick bamboo, the bottom outer edge of water quality testing floating platform main part is equipped with the floating collar through fixed hoop cover, be equipped with the recess around the floating collar, the inside center department of recess is equipped with the traction plate. The Chinese patent document CN217533181U discloses an aquatic floating body and a floating platform, wherein the floating platform comprises a metal frame and a plurality of floating bodies for supporting the metal frame, each floating body comprises a floating barrel, two opposite sides of the top of each floating barrel are provided with protrusions, and the protrusions are provided with first through holes for connecting rods to pass through; grooves are formed in the edges of two opposite sides of the bottom of the pontoon, angle steel edges are arranged at the grooves, and the angle steel and the protrusions are mutually perpendicular; the metal frame comprises a cross beam and a longitudinal beam, the cross beam is parallel to the bulge, a second through hole for the connecting rod to pass through is formed in the cross beam, the bulge is connected with the cross beam through the connecting rod, and the top and the bottom of the mutually spliced floating body are connected through metal rods. The existing floating platform technology has various characteristics and is respectively suitable for respective application occasions. However, there is still a certain disadvantage, mainly that the structure is not compact enough, and the effective duty ratio of the floating body is small relative to a certain horizontal (projected) area or a certain volume, which is unfavorable for obtaining larger buoyancy or carrying heavier objects.

Disclosure of Invention

The utility model aims to provide a hoisting system for deep water dredging, which meets the requirements of deep water mud sucking/dredging operation in a near-dam area of a reservoir or similar occasions.

The technical scheme of the utility model is as follows: the hoisting system for deep water dredging is provided with a mud sucking system and a hoisting platform, wherein the hoisting platform adopts a floating platform (or called floating platform), a crane is arranged on the hoisting platform, and a mud sucking head (a piece/device for sucking mud) of the mud sucking system is connected to a heavy object connecting end of a hoisting rope (a steel wire rope, a hoisting belt and the like) for hoisting a heavy object on the crane.

Preferably, the suction system is a pneumatic suction system, the suction head of the suction system is a pneumatic suction head, the pneumatic suction head takes pressure air (gas with relative pressure being larger than zero, such as air, the pressure value of the pneumatic suction head is suitable for the suction requirement under corresponding conditions) as a power source of suction, an air supply pipe for providing pressure air (compressed air or high-pressure air) for the suction system is connected, and the inlet side of the air supply pipe is connected with the pressure air source.

The pressure air source of the suction head can be generally arranged on a fixed basis.

Optionally, the crane is a crane (or a crane mainly comprising a hanger and a crane winch) formed by the hanger and the crane winch (or the crane winch), and the hanger and the crane winch are fixedly arranged on the hoisting platform; or the crane is a rotary crane, the hanger is provided with a rotary suspension arm, the hoisting device (the winding drum and the power device thereof) of the hoisting mechanism is arranged on the hanger, and the hanger is arranged on the hoisting platform.

One end of a wire rope (or other form of hoist rope) for hanging a weight is connected and wound (a length of wire rope from the end point can be wound on a drum) on a hoist (hoist), the end of the other end is a weight connection end of the wire rope for hanging a weight, and as the drum rotates, the wire rope wound on the drum is gradually released or the wire rope adjacent to the drum is gradually wound on the drum, thereby achieving hoisting of the wire rope.

Further, the mud outlet of the mud suction head is connected with a mud conveying pipe, a plurality of floating bodies are fixedly connected to the water surface extension section of the mud conveying pipe, and the mud conveying pipe floats on the water surface by means of the buoyancy of the floating bodies.

According to actual conditions, particularly the conveying power requirement of the sludge, a transfer platform can be arranged, or the transfer platform can be omitted, a booster pump is arranged on the transfer platform, and the booster pump is connected in series on a sludge conveying pipe of the sludge suction system.

Preferably, the transfer platform is a floating platform.

Preferably, the floating platform comprises a platform frame and a buoyancy material (or floating material, also referred to as a float from a physical perspective) fixedly mounted to the platform frame.

Preferably, a platform top plate is arranged at the top of the platform frame, so that an operator can conveniently work on the platform.

Preferably, the buoyant material of the flotation platform is foamed plastic, located within the platform frame.

Preferably, the platform frame is rectangular parallelepiped in shape, the buoyancy material is fixedly disposed within the platform frame and fills all or most of the space (e.g., more than 90% of the space) within the platform frame.

For example, the buoyancy material in the platform frame is composed of a plurality of rectangular parallelepiped-shaped floating blocks stacked together, and each side surface of the buoyancy material (combination of floating blocks) is respectively attached to/in contact with the platform frame on the corresponding side.

Further, the platform frame is formed by fixedly connecting angle steel and/or steel sectional materials with other shapes or sectional materials with other adapting materials, a plurality of cross bars and a plurality of longitudinal bars which are distributed in a plurality of cross ways are fixedly arranged in the top side frame and the bottom side frame, two ends of the cross bars and the longitudinal bars are respectively and fixedly connected on corresponding frame edges of the top side frame and the bottom side frame, and the cross bars and the longitudinal bars which are mutually intersected are also preferably fixedly connected on the cross points.

Further, a plurality of inclined rods connected end to end are fixedly arranged in the side frame, the inclined rods are connected end to form a tooth-shaped structure, and the upper end and the lower end of the tooth-shaped structure are fixedly connected to the upper frame edge and the lower frame edge of the side frame respectively.

The floating platform is connected with a plurality of cables which extend to different directions respectively, and the other end (the end which is not connected with the floating platform) of the cable is fixed on a fixed foundation; or the other end of the cable is wound on a winding drum of a cable winch, and the cable winch is arranged on a fixed foundation.

The connection points of the cables extending in different directions on the floating platform are preferably different, the cables are respectively positioned at the side edges of the floating platform corresponding to the extending directions of the cables, and the sum of the pulling force of the cables on the floating platform, the acting force of water flow borne by the floating platform and the sum of acting moment (equivalent to the mass center) are zero so as to keep the floating platform stable.

The working mode and the beneficial effects of the utility model are as follows: the floating hoisting platform is moved to a proper position, the hoisting platform is fixed in multiple points (multiple directions) by using a steel wire rope, the hoisting platform is prevented from moving randomly, a crane arranged on the hoisting platform conveys a mud suction head of mud suction equipment to a proper mud suction position, the mud at the water bottom is extracted by the mud suction equipment, the extracted mud is conveyed to a mud collecting pond on land through a mud conveying pipe, the movement or position adjustment of the hoisting platform is realized by cooperatively adjusting and changing the length of the steel wire rope in all directions, and then the mud suction operation of all operation areas is completed. According to actual needs, one or more floating transfer platforms can be arranged, the transfer platforms are used for supporting a mud conveying pipe, and a booster pump connected in series with the mud conveying pipe can be arranged to meet the power requirements of mud suction and mud conveying, and the fixing mode of the transfer platforms can be also steel wire rope multipoint fixing; the platform frame is cuboid, particularly cuboid with equal length and width, so that the structure is compact, and the operation in a relatively narrow water surface area is facilitated; because the floating bodies are cuboid and are stacked (regularly arranged) in the platform frame, each side face is connected or attached with the platform frame, no gap is reserved, the space in the frame is fully utilized, the buoyancy is increased, and the load which is enough to bear the crane and suck mud can be obtained with a smaller horizontal area of the platform; because the floating body is arranged in the platform frame, the floating body is not easy to be damaged due to collision of other objects and the like when in use, the floating body can be prepared from foaming plastic with low cost and high buoyancy (low specific gravity), the material cost and the preparation cost are low, the assembly is convenient, the floating body can be assembled on site with a section bar for assembling the platform frame, the requirement on transportation conditions is low, and the floating body can be suitable for occasions with poor transportation conditions.

Because the hoisting platform is small in size, the hoisting platform can be prepared/assembled on site, has low requirements on transportation conditions and operating water area conditions, can be used in the environment of a reservoir (including a near-dam area), and possibly is close to a dam when necessary, so that in the situation that a dredger cannot enter a field, dredging and emptying for removing sludge are not needed, and the operating water depth is not limited; the steel wire rope is adopted to fix the hoisting platform and the transferring platform (if provided), so that the position of the platform can be kept fixed and stable, and the length of the steel wire rope can be adjusted through a crane winch or other suitable equipment on the land surface, so that the movement or position adjustment of the hoisting platform and the transferring platform (if provided and required to move) is realized, and the operation of the whole operation area is completed; because the mud conveying pipe is supported in a suspended manner through the buoys, the long-distance horizontal state of the mud conveying pipe is basically maintained, the arrangement of the mud conveying pipe is facilitated, and the extra power consumption caused by the obvious bending of the mud conveying pipe is avoided.

The device has small volume and convenient arrangement, does not need navigation conditions or road conditions for large-scale device transportation, does not need water evacuation, and can be used for deep water mud sucking operation in a near-dam area of a reservoir or the like.

Drawings

FIG. 1 is an elevational (front view) schematic of a platform frame;

FIG. 2 is a schematic plan (top view) view of a platform frame;

FIG. 3 is a plan (bottom) schematic view of the platform frame;

FIG. 4 is a schematic plan (top view) view of the hoist system;

FIG. 5 is an elevational (schematic view) of the hoist system;

fig. 6 is a schematic elevation view of a crane deployed on a lifting platform.

Detailed Description

Referring to fig. 1 to 6, a lifting platform 11 floating on the water surface is provided, a crane (or crane) is mounted on the lifting platform, a mud suction head 21 of a mud suction system is fixed at a heavy object connecting end of a lifting rope through a suitable lifting tool (connecting fixing component), mud 40 is sucked through a lifting rope (e.g. a steel wire rope) 31 of the crane at a suitable position of the water bottom, a mud outlet of the mud suction head is connected with a mud pipe 23, mud (mud-containing mixture) sucked by the mud suction head is sent out through the mud pipe, and the lengths of the mud pipe and the steel wire rope are set according to actual needs, so that deep water dredging can be realized.

The suction system employs any suitable prior art technique. One preferred embodiment is to use a pneumatic suction system, the suction head of which may be referred to as a pneumatic suction head. The mud suction system uses pressure gas (or high-pressure air) as power to suck mud, can be well adapted to deep water dredging, and allows the mud to contain particles such as stones with a certain size, and the basic working principle is as follows: compressed air generated by an air compressor (pressure air source) 28 is conveyed to the bottom of the suction head through an air supply pipe 22, a water column above the section of a high-pressure air outlet of the suction head starts to accelerate from a static state, a flow velocity difference is generated, negative pressure is further formed, water near a silt inlet (bottom pipe orifice) carries silt components such as silt into the suction head, the water and the silt components flow together under the drive of high-speed air flow in the suction head, a gas-water-solid three-phase mixture (for convenience of description, the mixture is also called silt) is formed, and the mixture enters a silt conveying pipe from a silt outlet of the suction head.

The setting position of the pressure air source can be according to actual needs. For example, it may be provided on the top surface or on the bank of the dam 41, etc. The pressure air source comprises an air compressor and matched equipment, the air supply pipe 22 is connected with the mud suction head, the length of the air supply pipe is set according to actual needs, and the control mode and matched control facilities of the air supply pipe are according to the prior art. When the mud is required to be sucked, the control valve is opened, and pressure air enters the mud suction head through the air supply pipe so as to realize mud suction.

The crane is fixedly arranged on the hoisting platform, and a crane with a proper form can be selected according to actual conditions and needs. For example, a simple crane is composed of a hoist (which may be called a crane hoist) 36 and a hanger 37, both of which are fixedly installed on a hoisting platform with a certain distance therebetween, a wire rope serving as a hoisting rope (or sling) is threaded around a high-position fixed pulley (or pulley block) 35 provided at the top of the hanger, one end (a section including an end portion) is wound on a drum of the hoist (the end portion is fixed on the drum), the other end is vertically downward, the end portion is used for connecting/hanging a heavy object, a heavy object connecting end is provided, a mud suction head is fixedly installed at the end through a connecting piece (component), and the posture of the mud suction head should be adapted to the mud suction dredging requirement.

The small rotary crane 33 may be used, the boom of which is rotatable, and the suction area of the suction head may be properly adjusted and enlarged by means of rotation of the boom under the condition that the position of the lifting platform is unchanged, and the winding drum in the lifting mechanism and the power (driving) device of the winding drum may be regarded as a winding device, and the wire rope for the lifting rope may be wound around the winding drum.

The suction head is sent into the water through the crane, the height of the suction head is controlled and adjusted according to the suction progress, and the elevation of the dredged mud surface is gradually reached from top to bottom.

During operation, plane positioning is firstly carried out, the hoisting platform is moved to a proper position, a cantilever of the crane can be adjusted (if the hoisting platform is provided with the cantilever), the suction head is positioned at a required plane position, then the suction head is gradually lowered to be close to the mud surface through the crane, an air supply valve of an air supply pipe or a pressure air source is opened, sediment near a suction port enters the suction head under the combined action of water head pressure and compressed air, and the mud (mixture) is lifted to the water surface part of the mud conveying pipe through the underwater part of the mud conveying pipe and finally is sent out by the mud conveying pipe. And continuously lowering the suction head along with the lowering of the mud surface until the elevation of the mud surface after dredging is reached, and then moving to the next mud suction position. The cycle proceeds in this way until it is completed.

When the sludge to be cleaned is deeper, the sludge can be cleaned in layers or is put down according to a ratio of 1:14 during cleaning, so that collapse caused by overlarge excavation depth at one time is avoided.

The mounting position of the crane on the hoisting platform is favorable for the stability of the hoisting platform (including during working and during non-working), and a counterweight can be arranged on the hoisting platform if necessary.

The mud pipe which is allowed to bend is adopted, the pontoon 25 is bound on the mud pipe (corresponding part of the mud suction pipe) which is positioned on the water surface during operation, the part of the mud pipe floats on the water surface by virtue of the action of the pontoon, and the number or the setting density of the pontoons is according to actual needs.

The mud conveying pipe (corresponding part of the mud suction pipe) adjacent to the mud suction head is not provided with a pontoon, and the mud suction head is deeply immersed in water during working. The length of the mud pipe without the pontoon is determined according to actual needs, and a certain margin can be added for the water depth, so that a section of proper bending transition exists between the vertical part of the mud pipe which is deeply submerged in water and the horizontal part formed by the pontoon.

The transfer platform 12 is primarily used to carry the booster pumps 26 and also to support the mud pipe. The booster pump is mainly arranged according to the power requirement of sludge conveying and is connected in series on a sludge conveying pipe of the sludge suction system so as to boost the sludge flow. According to the sludge characteristics and the pressurizing requirements, a sewage pump in an adaptive form can be used as a pressurizing pump.

The mud pipe at the inlet side of the booster pump may be referred to as a suction pipe, and the mud pipe at the outlet side of the booster pump may be referred to as a discharge pipe. In practice, the suction head may be integral with the pipe or part of the pipe.

The respective proper materials and characteristics can be respectively selected according to the working requirements of the suction pipe and the sludge discharge pipe.

The transfer platform and the transfer platform are both floating platforms or become floating platforms.

As a preferred embodiment, the frame of the floating platform (may be referred to as a platform frame) adopts a stereoscopic frame with a cuboid shape, and a cuboid foamed plastic block is fixedly arranged in the frame as a buoyancy material, so that a plurality of foamed plastic blocks can be stacked together for convenience in preparation, and the space surrounded by the platform frame is filled. Due to the characteristics of the foamed plastic, in practice, the foamed plastic blocks are allowed to be extruded together, and the sides of the combined foamed plastic blocks which are stacked together are extruded with the corresponding sides (frame edges, rods and the like) of the platform frame, so that the stacking compactness and the stability of the foamed plastic blocks are improved, but according to actual needs, an assembly gap and a space for setting other functions, such as a vertical through hole for passing through a lifting rope, can be reserved, and the aperture of the vertical through hole is suitable for the movement requirement in the working process of the lifting rope. The foaming plastic block positioned in the platform frame should be fixedly connected to the platform frame.

The top of the platform frame is provided with a platform top plate, so that operators can conveniently operate and install equipment on the platform.

Based on safety considerations, the platform frame may be provided with edge (perimeter) rails and lifting rope rails surrounding the lifting rope (if the lifting rope passes over the lifting platform), the edge rails should be provided with doors or opening rails to facilitate personnel ingress and egress.

According to the requirement, the through holes for vertically penetrating through the crane lifting ropes can be formed in the lifting platform, and the crane layout mode is beneficial to the stability of the platform.

In general, the vertical through holes for passing through the hoist ropes may be located at intermediate positions in the lateral and/or longitudinal directions, and accordingly, the spacing of the vertical bars or crossbars on the top and bottom surfaces of the platform frame in the respective areas should be sufficient to provide the vertical through holes. In the case where the cross bars or the longitudinal bars in other areas are equally spaced apart and the spacing is too small, the spacing should be increased appropriately in the area.

The platform frame is formed by fixedly connecting strip-shaped profiles, such as steel profiles of angle steel and/or other shapes, or profiles of other adaptation materials and shapes.

A plurality of cross bars 16 and a plurality of longitudinal bars 17 which are distributed in a plurality of crossed ways are fixedly arranged in the top side frame and the bottom side frame of the platform frame, two ends of the cross bars and the longitudinal bars are respectively and fixedly connected to corresponding frame edges of the top side frame and the bottom side frame, and the cross bars and the longitudinal bars which are mutually crossed are also preferably fixedly connected at the crossing points.

The side frame of the platform frame is internally and fixedly provided with a plurality of vertical rods 14 which are distributed at intervals, a plurality of inclined rods 15 which are connected end to end can be further arranged, the inclined directions of the adjacent inclined rods are opposite, the inclined rods are connected end to form a toothed structure, and the upper end and the lower end of the toothed structure are respectively and fixedly connected on the upper frame edge and the lower frame edge of the side frame.

The connection between the rims/bars on the platform frame may be achieved according to prior art, e.g. welding, bolting etc.

The floating platform is connected with a plurality of cables 19 which extend towards different directions respectively, the other ends (ends which are not connected with the floating platform) of the cables are fixedly connected with a fixed foundation, the fixed foundation for fixing the cables is selected according to practical situations, for example, the top surface of a dam, a fixed slipway 42, the shore of a hard ground (shore ground), and the like, and the connection with the fixed foundation, for example, a bracket, a drill steel or a pre-buried connecting piece, can be realized through a connecting piece in a proper form. The cable winch can be arranged on a fixed basis, the other end of the cable is wound on a winding drum of the cable winch, and the cable is fixed through the cable winch.

The connection points of the cables extending in different directions on the floating platform can be respectively positioned on the corresponding side edges (for example, platform frame frames positioned on the corresponding sides) of the floating platform corresponding to the extending directions of the cables, the number of the cables, the directions of the cables and the connection positions of the cables on the floating platform are properly set, so that the sum of the pulling force of the cables on the floating platform and the acting force and the sum of the acting moment (equivalent to the mass center) of the water flow borne by the floating platform under the tensioning state of the cables are zero, and the stability of the floating platform is kept.

When the position of the hoisting platform or the transferring platform needs to be adjusted, the length of each cable connected with the platform is adjusted by a manual mode or a cable winch, and the hoisting platform or the transferring platform is dragged to and fixed at a proper position.

The preferred and optional technical means disclosed in the present utility model may be arbitrarily combined to form a plurality of different specific embodiments unless otherwise specified and when one preferred or optional technical means is further defined as another technical means.

Claims (10)

1. The deep water dredging hoisting system is provided with a mud sucking system and is characterized by further comprising a hoisting platform and a transferring platform, wherein the hoisting platform adopts a floating platform, a crane is arranged on the hoisting platform, a mud sucking head of the mud sucking system is connected to a heavy object connecting end of a hoisting rope used for hanging heavy objects on the crane, the transferring platform adopts the floating platform, a booster pump is arranged on the transferring platform, the booster pump is connected to a mud conveying pipe of the mud sucking system in series, the floating platform is connected with a plurality of cables which extend to different directions respectively, and the other ends of the cables are fixed on a fixed foundation; or the other end of the cable is wound on a winding drum of a cable winch, and the cable winch is arranged on a fixed foundation.

2. The hoisting system for deep water dredging as claimed in claim 1, wherein the suction system is a pneumatic suction system.

3. The hoisting system for deep water dredging as claimed in claim 2, characterized in that the suction head of the suction system is a pneumatic suction head, and that an air supply pipe for supplying pressure air thereto is connected, and that the inlet side of the air supply pipe is connected to a pressure air source.

4. A hoisting system for dredging in deep water as claimed in claim 3, characterized in that the pressure air source of the suction head is arranged on a fixed basis.

5. The hoisting system for deep water dredging as claimed in claim 1, wherein the hoist is a hoist comprising a hanger and a hoist winch, both of which are fixedly mounted on the hoisting platform; or the crane is a rotary crane, the hanger is provided with a rotary suspension arm, the hoisting device of the hoisting mechanism is arranged on the hanger, and the hanger is arranged on the hoisting platform.

6. The hoisting system for deep water dredging as claimed in claim 1, wherein the mud outlet of the mud suction head is connected with a mud pipe, and a plurality of floating bodies are fixedly connected to the water surface extension section of the mud pipe and float on the water surface by means of the buoyancy of the floating bodies.

7. A hoisting system for deep water dredging as claimed in any one of claims 1-6, characterized in that the floating platform comprises a platform frame and a buoyancy material fixedly mounted to the platform frame.

8. The deep water dredging hoisting system as recited in claim 7, wherein the buoyant material of the floating platform is foamed plastic within the platform frame.

9. The hoisting system for deep water dredging as claimed in claim 7, wherein the platform frame is formed by fixedly connecting angle steel and/or other steel profiles or profiles of other suitable materials.

10. The hoisting system for deep water dredging as claimed in claim 9, wherein the top side frame and the bottom side frame of the platform frame are fixedly provided with a plurality of cross bars and a plurality of longitudinal bars which are distributed in a crossed manner, and the side frames are fixedly provided with a plurality of inclined bars which are connected end to end, and each inclined bar is connected end to form a toothed structure.